| 000 | 00369 a2200097 4500 | ||
|---|---|---|---|
| 020 | _a9261019315 | ||
| 920 | _a92-61-01931-5 | ||
| 245 | 0 |
_aCCITT GAS 9 Economic and Technical Aspects of the Transition from Analogue to Digital Telecommunication Networks / _c. |
|
| 710 | 2 |
_aInternational Telecommunication Union. _eWydawca _4pbl |
|
| 260 |
_aGeneva : _bITU, _c1984. |
||
| 300 |
_a168 s.: _bil.; _c30 cm. |
||
| 999 |
_c1828 _d1828 |
||